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AXAF
sage
Reged: 09/15/04
Posts: 234
Loc: New England
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Let me see if I can follow up on my Baader wedge question with another good thread. 
I also want to move up in the H-alpha world. I've owned my PST/double stack system for several years now. So I am no stranger to this branch of the hobby. I've been watching the evolution of the Lunt products, and have my eyes set upon the Lunt 60mm H-alpha `scope with Pressure Tuner and Feather Touch focuser. With a $2000 price tag, do owners of the sort of system find them to be a good value.?
I'd be especially interested to hear of quantitative opinions of the pressure tuner functionality compared to the tilt system. I would think that the pressure tuner design will yield a brighter image, simply because I envision a tilt system as having to divert some fraction of the incoming beam.
Thanks in advance,
Gary
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Torus Optics 32cm f/6 Dob
Osypowski Equatorial Platform
Fujinon 10x70
Coronado PST plus SolarMax 40 filter
Vixen GPD2 on a Berlebach Tripod
StellarVue SV90T
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Gene Baraff
sage
Reged: 03/22/09
Posts: 246
Loc: Berkeley Heights, N.J.
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Quote:
I'd be especially interested to hear of quantitative opinions of the pressure tuner functionality compared to the tilt system. I would think that the pressure tuner design will yield a brighter image, simply because I envision a tilt system as having to divert some fraction of the incoming beam.
Gary
More likely: The brightness of the pressure system will not be better. Rather, the area of best resolution - where you can see surface details the best - will be larger with the pressure system than with the tilt system.
Gene Baraff
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stephenramsden
Pooh-Bah
Reged: 08/17/07
Posts: 1326
Loc: Atlanta, GA--USA
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I own both the pressure tuned and the tilt wheel LUNT scopes. I would say that the full disk of the air tuned etalon is as bright as the sweet spot area in the tilt wheel tuned system.
I don't think you are going to find any quanitative measures of this though.
es, I do find it to be a good value.
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Stephen W. Ramsden
Atlanta, GA--USA
NASA SOLAR SYSTEM AMBASSADOR
www.solarastrophotography.com
www.SolarScopeReviews.com
www.stephenramsden.com
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3460
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I will say that my scope (same one you're talking about) is an extremely high quality piece of equipment- and the folks ar Lunt are absolutely wonderful to deal with. You can always appreciate the difference in a high quality piece of equipment- you are reminded of it every time you touch it.
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Wes
Atlantic Beach, FL
Some bino’s from Miyauchi 5x32 Binon's up through Garrett 20x110 Signature's,
Some telescopes from a Stellarvue 80mm NHNG up through a couple of 8” reflectors…
And a wonderful 4.25" Delmarva Shiefspiegler!
Some good friends, made here on C/N.
Oh- several cats and a wonderful wife!
Anyone want a cat???? :-O
"When your work speaks for itself- Don't Interrupt" -Gamble Rogers
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Ralph Marantino
Postmaster
Reged: 05/01/05
Posts: 6331
Loc: Old Bridge, New Jersey
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I sold my 6 inch AP refractor to buy the pressure tuned 100 mm LUNT and I have owned a DSPST for many years since they first came out
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Lunt H-alpha LS100THa/B3400
Rockland Astronomy Club
Member BAA Solar Section
Central Appalachian Astronomy Club
Astronomical League
DSPST,PST & 70mm Coronado Cal K telescope.2.2A
Zeiss 2 inch prism diagonal&Zeiss Zoom EP
2inch APM Herschel Wedge in a 94mm F7 Brandon
14.5 inch f4.2 Starmaster Dob(Zambuto mirror)
TeleView Genisis SDF with 1000 Oaks Glass filter
Zeiss 63mm f13.5 refractor 1000 Oaks Glass filter
Itty Bitty Solar Radio Telescope.
LHRIES Lite Solar Spectrometer
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skyward_eyes
Carpal Tunnel
Reged: 12/12/06
Posts: 2105
Loc: Arizona
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The LS100THa is an awesome scope, the pressure tuner is a very nice upgrade from the older tilt design of Coronado.
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